Statement List (STL) - DCE FEL ČVUT v Praze

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Program Control Instructions MCRA - Activate MCR Area, MCRD - Deactivate MCR Area MCRA and MCRD must always be used in pairs. Instructions programmed between MCRA and MCRD are dependent on the state of the MCR bit. The instructions that are programmed outside a MCRA-MCRD sequence are not dependent on the MCR bit state. You must program the MCR dependency of functions (FCs) and function blocks (FBs) in the blocks themselves by using the MCRA instruction in the called block. Statement List (STL) for S7-300 and S7-400 Programming 10-18 A5E00706960-01
10.15 Important Notes on Using MCR Functions ! ! Program Control Instructions Take care with blocks in which the Master Control Relay was activated with MCRA • If the MCR is deactivated, the value 0 is written by all assignments (T, =) in program segments between MCR( and )MCR. • The MCR is deactivated if the RLO was = 0 before an MCR( instruction. Danger: PLC in STOP or undefined runtime characteristics! The compiler also uses write access to local data behind the temporary variables defined in VAR_TEMP for calculating addresses. This means the following command sequences will set the PLC to STOP or lead to undefined runtime characteristics: Formal parameter access • Access to components of complex FC parameters of the type STRUCT, UDT, ARRAY, STRING • Access to components of complex FB parameters of the type STRUCT, UDT, ARRAY, STRING from the IN_OUT area in a block with multiple instance capability (version 2 block). • Access to parameters of a function block with multiple instance capability (version 2 block) if its address is greater than 8180.0. • Access in a function block with multiple instance capability (version 2 block) to a parameter of the type BLOCK_DB opens DB0. Any subsequent data access sets the CPU to STOP. T 0, C 0, FC0, or FB0 are also always used for TIMER, COUNTER, BLOCK_FC, and BLOCK_FB. Parameter passing • Calls in which parameters are passed. LAD/FBD • T branches and midline outputs in Ladder or FBD starting with RLO = 0. Remedy Free the above commands from their dependence on the MCR: 1. Deactivate the Master Control Relay using the MCRD instruction before the statement or network in question. 2. Activate the Master Control Relay again using the MCRA instruction after the statement or network in question. Statement List (STL) for S7-300 and S7-400 Programming A5E00706960-01 10-19
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s SIMATIC Statement List (STL) for
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Preface Purpose This manual is your
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Preface Online Help The manual is c
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Contents 1 Bit Logic Instructions 1
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Contents 8 Floating-Point Math Inst
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Contents 14 Accumulator Instruction
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1 Bit Logic Instructions 1.1 Overvi
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1.2 A And Format A Address Data ty
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1.4 O Or Format O Address Data typ
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1.6 X Exclusive Or Format X Addres
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1.8 O And before Or Format Descript
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1.10 AN( And Not with Nesting Open
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1.14 XN( Exclusive Or Not with Nest
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Example Statement List Program A( O
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1.17 R Reset Format R Address Data
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1.19 NOT Negate RLO Format Descript
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1.21 CLR Clear RLO (=0) Format Desc
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1.23 FN Edge Negative Format FN Bi
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1.24 FP Edge Positive Format FP Bi
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2 Comparison Instructions 2.1 Overv
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2.3 ? D Compare Double Integer (32-
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3 Conversion Instructions 3.1 Overv
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3.3 ITB Integer (16-Bit) to BCD For
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3.5 ITD Integer (16 Bit) to Double
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Conversion Instructions 3.7 DTR Dou
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Conversion Instructions 3.9 INVD On
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Conversion Instructions 3.11 NEGD T
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Conversion Instructions 3.13 CAW Ch
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3.15 RND Round Format Description S
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3.17 RND+ Round to Upper Double Int
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4 Counter Instructions 4.1 Overview
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4.3 L Load Current Counter Value in
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4.5 R Reset Counter Format Descript
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4.7 CU Counter Up Format CU Counte
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5 Data Block Instructions 5.1 Overv
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5.3 CDB Exchange Shared DB and Inst
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Data Block Instructions 5.6 L DILG
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6 Logic Control Instructions 6.1 Ov
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6.2 JU Jump Unconditional Format De
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6.4 JC Jump if RLO = 1 Format Descr
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6.6 JCB Jump if RLO = 1 with BR For
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6.8 JBI Jump if BR = 1 Format Descr
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6.10 JO Jump if OV = 1 Format Descr
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6.12 JZ Jump if Zero Format Descrip
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6.14 JP Jump if Plus Format Descrip
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6.16 JPZ Jump if Plus or Zero Forma
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6.18 JUO Jump if Unordered Format D
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7 Integer Math Instructions 7.1 Ove
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Integer Math Instructions 7.3 +I Ad
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Integer Math Instructions 7.5 *I Mu
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Example: 13 divided by 4 Contents o
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Example 3 STL Explanation L MD20 L
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Integer Math Instructions 7.9 -D Su
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Integer Math Instructions 7.11 /D D
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Integer Math Instructions 7.12 MOD
Page 111 and 112: 8 Floating-Point Math Instructions
Page 113 and 114: 8.3 Floating-Point Math Instruction
Page 115 and 116: Floating-Point Math Instructions 8.
Page 131 and 132: 9 Load and Transfer Instructions 9.
Page 133 and 134: Contents of ACCU 1 Load and Transfe
Page 135 and 136: Load and Transfer Instructions 9.4
Page 139 and 140: 9.9 T Transfer Format Description S
Page 145 and 146: 10 Program Control Instructions 10.
Page 147 and 148: 10.3 BEC Block End Conditional Form
Page 149 and 150: 10.5 CALL Block Call Format Descrip
Page 151 and 152: 10.6 Call FB Format Description CAL
Page 153 and 154: 10.7 Call FC Format Description CAL
Page 155 and 156: 10.8 Call SFB Format Description CA
Page 157 and 158: 10.9 Call SFC Format Description CA
Page 159 and 160: 10.12 CC Conditional Call Format De
Page 161: 10.14 MCR (Master Control Relay) !
Page 165 and 166: Example Program Control Instruction
Page 167 and 168: 10.18 MCRA Activate MCR Area Format
Page 169 and 170: 11 Shift and Rotate Instructions 11
Page 171 and 172: Example 1 STL Explanation L MW4 //L
Page 173 and 174: Examples Shift and Rotate Instructi
Page 183 and 184: 11.2.2 RLD Rotate Left Double Word
Page 185 and 186: 11.2.3 RRD Rotate Right Double Word
Page 187 and 188: 11.2.4 RLDA Rotate ACCU 1 Left via
Page 189 and 190: 12 Timer Instructions 12.1 Overview
Page 191 and 192: Time Base Timer Instructions Bits 1
Page 193 and 194: 12.3 FR Enable Timer (Free) Format
Page 195 and 196: Timer Instructions 12.4 L Load Curr
Page 197 and 198: Timer Instructions 12.5 LC Load Cur
Page 199 and 200: 12.6 R Reset Timer Format R Timer
Page 201 and 202: Enable input Start input Reset inpu
Page 205 and 206: Enable Input Start Input Reset Inpu
Page 211 and 212: 13 Word Logic Instructions 13.1 Ove
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Examples Word Logic Instructions Bi
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14 Accumulator Instructions 14.1 Ov
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14.3 POP CPU with Two ACCUs Format
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14.5 PUSH CPU with Two ACCUs Format
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14.7 ENT Enter ACCU Stack Format De
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14.10 DEC Decrement ACCU 1-L-L Form
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14.12 +AR2 Add ACCU 1 to Address Re
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14.15 NOP 1 Null Instruction Format
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A Overview of All STL Instructions
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German Mnemonics English Mnemonics
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German Mnemonics English Mnemonics
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Overview of All STL Instructions A.
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English Mnemonics German Mnemonics
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English Mnemonics German Mnemonics
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B Programming Examples B.1 Overview
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Absolute and symbolic Programming P
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Absolute and symbolic Programming P
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B.3 Example: Timer Instructions Clo
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Signal states of the Bits of Memory
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Statement List that Activates the I
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B.6 Example: Word Logic Instruction
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C Parameter Transfer ! The paramete
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Index ) ) .........................
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I -I ..............................
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SLD................................
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Statement List (STL) - DCE FEL ČVUT v Praze

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